Saw-tooth



Patented -10 SAW TOOTH.-

E. HARRIS.

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' UNITED "STrrrEs PATENT OF ICE.

nnooHnARRIs, OF EVANSVILLE, INDIANA. i

SAW-TOOTH.

SPECIFICATION forming part of Letters Patent N01 381,011, dated April 10, I888; 7

Application filed Ja uar 17, 1888. Serial No. 201,015. (No model.) V

To aZZ whom it may concern: 1 Be it known thatI, ENOOH HARRIS, a citizen of the United States, residing at Evansville, in the county of Vanderburg and State of Indiana, have invented new and. useful Ind provements in Saw-Teeth, of which the following is a specification.

My invention relates to improvements in saw-teeth; and it consists in the peculiar constrnction and combination of devices,thatwill be more fully set forth hereinafter, and particularly pointed out in the claims.

The object of my invention is to provide a saw with teeth which are'insertible therein and readily detachabletherefrom and are cheap and simple in construction,

In the accompanying drawings, Figure 1 is a perspective view of a portion of a saw provided with an insertible tooth embodying my improvements. Fig. 2 is a longitudinal sectional view of the same. Fig. 3 is, an edge elevation showing the front side of theinserti- "ble tooth. Fig. 4. is a sectional view taken on the line a: a: of Fig. 2. Fig.- 5 is a similar view taken on the liney y of Fig. 2.

A represents the blade of the saw, which is provided with the solid projections B and the curved recesses 0 between the said projections. In the point of each-projection, on the front side thereof, is made a recess, D, and on the rear side of the projection is a groove, E, which extends also over the edge of each recess O. p

F represents an insertible tooth, which is made of highlyrtempered steel, is substantially V-shaped in elevation, and thereby provided with a front arm, G, which fits in the recess D, and with a rear arm, H, which is adapted to fit on the rear edge of the projection. The said arm H hasa curved extensiomI, to fit in the recess 0, and the said arm and the'said extension are provided with a continuous rib or flange, K, which fits in the groove E, as shown. The point of each solid projection B is of somewhat less width than the insertible tooth at the angle formed byits arms, so that a recess or hollow, a, is formed on each side of, the point of the solid projection.

L represents a pin or rivet, which is secured in a, transverse opening, M, that is made in the opposing sides of the arm Got the insertible tooth and the front of the solid tooth B.

The said pin or rivet is swaged or clinched in the insertibletooth rigidly in position. The

' groove in the rear side of the solid projection I and the rib or flange in the insertible tooth that fits in the said groove effectually prevent lateral motion of the insertible tooth, and the pin, rivet, or key secures the insertible tooth 'so firmly to the saw that it cannot become accidentally disengagedtherefrom. r

The hollows a on each "do of the point of each solid projection prevent sawdust from clogging in the kerf and thereby choking the saw.

claim- Having thus described 1 my invention, I

\I 1. The combination of thesaw-blade having 1 the solid projections B, provided with the recesses D, and the insertible saw-teeth having the arms G H, adapted to fit on the front and pins, rivets, or keys to secure the'saidinserti ble projections to the solid projections, sub- ,stantially as described.

rear edges of the solid projection, and the cesses C, provided'with'the grooves E, and

the insertible teeth having the; arms G H to fit'on opposite sides of .the solid projections,

the arms H having extensions I to fit 'in.'1'ecesses 0,.said arms H being provided with the ribs or flanges toengage the grooves E, sub-. stantially as described. I

cesses D, the insertible saw-teeth having the arms G, to fit in recesses D, and the arms H, to bear-on the rear side of the projections, and

openings formedin the opposing sides of the I v 3- The combination of the saw-blade having the solid projections B, provided with the resolid projections and arms G, substantially as 7 described. V

4. The saw-blade having the solid'projec- "tions B, in combination with the insertible,

teeth-secured on the points of the solid projec tions, the latter being narrower than the'corresponding portions of the insert'ible teeth, and thereby forming hollows a',*f or the purpose set forth, substantially as described, 7

'ICO

In testimonythat I claim the'foregoing as my own I have hereto affixed my signature in presence of two witnesses.

Witnesses: V

DANIEL GORDON, A. 0. Tunisia.

moon HARRIS.

0 the pins, rivets, or keys fitted in transverse L 

